Incandescent-gas-lamp burner.



PATENTED JULY 30, 1907.

E. H. 0. WERWATH. INGANDESGENT GAS LAMP BURNER.

APPLICATION FILED MAR. 31, 1906.

Iv Vin/7'07? THE NORRIS PETERS ca., wAsnmfl on, n. c

UNITED STATES PATENT OFFICE.

INCANDESCENT-GAS-LAMP BURNER.

Specification of Letters Patent.

Patented July 30, 1907.

Application filed March 31, 1906. Serial No. 309,171.

To all whom it may concern:

Be it known that I, Enron HANS OSWALD WERWATH, a subject of the Emperorof Germany, and a resident of Stephanus street 1, Linden, near Hanover,Germany, have invented a new and useful Improved Incandes cent-Gas-LampBurner, of which the following is the specification.

In the incandescent gas lamp burners as generally used the lightingpower of the incandescent mantle is mostly greatly reduced, if there isnot the full gas pres sure or if the gas cock is not turned on full. Thereason for such reduction of the lighting power lies in the fact, thatthe flame is blown away from the incandescent mantle towards the insideof the latter by the current of air entering freely at the lower openingof the chimney as soon as the pressure of the gas mixture inside theincandescent mantle is reduced owing to the reduced supply of gas.

It has been proposed to limit the amount of air supplied outside and toregulate the same by means of a slide. Hereby however a depression inthe lower part of the chimney varying on the one hand according to theposition of the slide on the other hand according to the amount of gasburned, is created, which will have a considerable effect on the amountof mixture air entering through the lower openings in the burner tube.This amount of mixture air again is of considerable influence on thesize of the flame, while it is necessary for obtaining a good lightingpower to keep the size or at least the diameter of the flame constantand of such a size that the hottest combustion zone will be inside themeshes of the mantle.

By employing the rotary slides for the openings of the Bunsen tube, usedsometimes for regulating the amount of mixture air, the requiredbalancing of the inside and the outside supply of air can be obtained bythrottling the outside air by means of a slide for any existing gaspressure and various openings of the gas cock, however this will requirein each single instance tedious systematic trials, so that this methodwould waste too much time if practically employed and could not becarried out by an unskilled person. According to the present inventionthis can be avoided by connecting the air slide for the outside air withthe slide for the openings in the Bunsen tube either rigidly or by othermeans, so that simultaneously with the openings admitting the outsideair, the openings in the Bunsen tube are regulated in such a manner,that the required equilibrium between the amount of air drawn in bothoutside as inside of the mantle or the Bunsen tube respectively ispreserved independently of the fluctions of the suction. Hereby it iseasily arranged, that to each position of the gas cock a certainposition of the mutual regulating slide for the two air passages of theburner corresponds, so that on turning the gas cock this air slide issimultaneously suitably adjusted by means of suitably providedconnecting gear.

In the accompanying drawings Figure 1 is a side view of such anincandescent gas burner, Fig. 2 a section through Fig. 1 along 22.

The Bunsen tube 1 of the Bunsen burner has at its upper end the burnerhead 3 projecting into the interior of the mantle 2, the said headfitting with its tube shaped stem 4 on the Bunsen tube 1. The lowerextended part of the burner tube 1 is surrounded by a casing extendedupwards 5, and closed below by means of a flat annular disk 6, restingon a slide ring 7, fitted to the Bunsen tube 1. Both the slide ring 7and the annular disk 6 attached to the casing 5 have perfo-.

rations 8 and 9 respectively of suitable size, so that on turning thecasing 5 on ring 7 the air entering into the interior of the former andproceeding thence to the flame can be regulated as if by a slide.

Into the lower part of the casing 5 a cylindrical slide 11 is fitted,closely encircling the extended part 10 of the Bunsen tube, the saidcylindrical slide being rigidly connected with the body of the casing 5.This cylindrical slide has perforations similar and opposite to theusual perforations 12 in the Bunsen tube and from these perforationsstraight or bent tubes 13 extend through theinside of the casing 5 tothe outside wall of the latter, communicating here with the outside air.

These tubes 13 which supply air to the openings 12 in the Bunsen tube,allow of regulating the supply of air to the Bunsen tube together withthe supply of air to the flame from outside by turning the casing.

As the amount of air to be supplied inside and outside is in a givenproportion to the gas mixture supplied through the ordinary nozzle 14into the burner tube, said gas mixture being given by the respectiveposition of the gas cock, the casing 5 can also be arranged in such amanner, that it is positively adjusted by the turning of the cock 15. Inthe design shown in the drawing a toothed segment 17 attached to thecock is provided for this purpose, the said segment meshing with anothertoothed segment 16 provided on the easing 5. The slide regulating theoutside air can also be arranged above the entrances of the air into theburner tube, more or less close under the lower opening of the burnergallery or the chimney respectively. In this case the outside casing 5can have perforations, and the air tubes passing through said casing canbe omitted. Lastly also instead of combining the slides for the airpassages in one rotating part, any other mechanical device can beemployed by means of which the two air passages are opened or closedrespectively at one time in a given proportion. The proper proportion ofthe openings required for each position must of course be correctlydetermined in manufacturing the apparatus by giving the openings in theslides a suitable size, or

if both slides are moved dependently of each other by means ofintermediate gearing, by suitably dimensioning such intermediategearing.

1. In combination with the burner tube of a gas lamp having a perforatedlower portion, a rotary casing surrounding the tube, and having aperforated bottom, a perforated plate on the tube upon which the casingrests, said casing having a cylindrical portion closely surrounding thelower perforated portion of the tube and having openings therein andtubes 13 passing through the casing and com municating with saidopenings.

2. In combination with the burner tube of a gas lamp having a perforatedlower portion, a rotary asing sui rounding the tube, and having aperforated bottom, a perforated plate on the tube upon which the casingrests, said casing having a cylindrical portion closely surrounding thelower perforated portion of the tube and'having openings therein, tubes13 passing through the casing and communieating with said openings, acock forcontrolling'the flow of gas,'a segment thereon and a segment onthe casing engaging with the first mentioned segment.

In testimony whereof I have signed my name to this ERICH HANS OSWALDWERWATH.

Witnesses 2 ANNA DIPPEL, HERMINE GGDECKE.

